Finally finished the magnesium front fairing mount.
I was going to make a digital version of a Smiths tachometer for it but time is of the essence. This is a Chinese "universal" gauge - tachometer, speedometer, high beam, running lights, turn signals, neutral, fuel gauge, gear indicator, low battery and odometer.
I will not be using a few such as gear indicator. There are only five gears. I think that I can remember which gear I am in. Besides, not accelerating hard enough, shift down. Hitting red line, shift up. Pretty simple really.
I do not have running lights or fuel gauge. I probably will add turn signals as it is rather difficult to raise your arm vertical when leaned over in a tuck.
I will use the neutral light for the shift warning. It likely will not be bright enough though.
As you can guess, the instructions are written in Chinglish - [Fleet blue] : right signal Positive polar connection. That means light blue wire, right turn signal, positive connection.
They use green wire for negative power, a red wire direct to positive battery (to maintain miles?) and a black wire for switched positive power (labelled "positive electric door lock connection".
It appears most of the people putting up videos are completely guessing on how to make it work. The link to a youtube video is completely useless. The guy is totally clueless.
The connectors are fairly universal Japanese motorcycle items. The fuel gauge requires a variable resistor to battery minus between 3 and 85 ohms. Less than 3 ohms or more than 85 ohms makes the fuel gauge flash as if it is empty with the default setting of 3. I have not investigated the other modes since I am not using it.
The speedometer uses a hall effect pickup with settings of 1-12. They supply 3 magnets and suggest using 2. People in the videos are completely confused on setting the tyre circumference. It is the same as used on bicycles, mark the ground and tyre, roll until the mark is pointing at the ground again, measure the distance in millimeters and input that number.
They refer to engine RPM as "Tire rotating speed setting" although the previous instruction ends with "then enter into the cylinder number setting area" after saving the magnet setting.It does not mention how many settings there are for the number of cylinders but since the ignition gives one pulse per two revolutions a single cylinder setting should work. I will work it out with a pulse generator first.
The last setting is "the mileage cleared setting". It says "It could be cleared 200km once, 3 times in total. (Enter into this area again to clear more)". I will have to work this out with the pulse generator to see what that means.
The battery icon flashes below a set voltage. I did not measure it but probably around 12-12.5 volts.
The speed/mileage units can be changed between metric and foot-and-finger.